Dust collector



ug- 3, 1937- G. E. TEAsDALE 2,089,076

DUST COLLECTOR Filed Jan. s. 1937 \\\\\\\\\\\\ffy^ INVENTOR George E Teas dal@ l M ,WroRNExfs/ Patented Aug. 3, 1937 UNiTED STATES parametrica' 3 Claims.

This invention relates to dust collectors, and particularly to improved dust collectors for chimneys, th'e object being to provide a construction which may be readily mounted on any special or conventional chimney and act to prevent dust, sparks, and the like from being discharged into the open atmosphere above the chimney.

Another object of the invention is to provideV a dust collector for chimneys wherein means are presented which will deflect the smoke and dust so that the movement ofthe smokeV will be retarded during the change of direction and allow the yclust to settle into a suitable hopper, while at the same time permitting the gaseous matter to l54 move outwardly through the outlet of the device. An additional object, more specifically, is to provide a dust collector for chimneys and the like wherein rotating means are presented actuated by the movement of the smoke or dust for break- 2O ing up or stirring any dust or foreign matter collected, whereby it may freely be discharged.

In the accompanying drawing:

Fig. 1 is a longitudinal vertical sectional View through the upper part of a chimney and a collector disclosing an embodiment of the invention, the section being taken on the line I-I of Fig. 2;

Fig. 2 is a sectional view through Fig. 1 approximately on the line 2 2.

Referring to the drawing by numerals, I indicates a chimney of any desired kind which is adapted to extend upwardly through the roof 2 of the building. In various buildings it is customary to have a chimney and to construct the chimney to project some appreciable distance above the roof. Under some circumstances dust and sparks Will pass out of the chimney and become more or less dangerous to surrounding property as well as be objectionable by reason of the discharge of dust, soot, and the like. To overcome these objections a collector has been provided, as shown in the accompanying drawing, wherein dust and other foreign matter is collected and guided to a suitable receptacle while the gases are permitted to escape upwardly into the air. As shown in Fig. 1, the chimney I is adapted to receive and support a hood 3 which is provided with a depending flange 4 snugly fitting over the upper end of the chimney and a tubular inlet 5 is formed to fit snugly within the flue 6 so that all smoke or other matter passing up through the flue will be discharged into the hood 3 before anything passes out of the outlet l. Y The hood 3 and associated parts are preferably made from metal and may be secured in place by friction only or by cement, bolts, or the like. 'I'he hood 3 is (Cl. 18S-95) preferably of the same general shape as the chimney I, and as shown in the accompanying drawingis substantially rectangular with the outlet l set oif slightly to the right of the inlet 5 as illustrated in Fig. 1. 5

A primary deilector 8 is arranged in the inlet 5 so as to deflect the dust, smoke, and the like to one side so as to heat the respective blades 9 of the propeller I il as the propeller rotates. This propeller is rigidly secured to a shaft II jourl0 naled in a suitable journal tube I2. A stirring member I3 is also rigidly secured to the shaft I I, whereby whenever the propeller Il) rotates the stirring member I3 will rotate. This stirring' member is preferably formed with a plurality of 15 stirring blades and each blade is preferably substantially triangular in cross section, whereby as it rotates it will stir and'break up any dust or foreign matter collecting in the hopper III which is formed from part of the casing 3 and from an 20 inclined wall I5.

Extending from the inlet 5 is an auxiliary deector I6 which extends in a general direction toward the outlet I although inclined from a straight line as shown in Fig. 1. The upper part 25 of the deflector IG is arc-shaped and extends in a certain sense horizontally transversely of the outlet 'l so that smoke and dust striking the deflector will be deflected to the left as shown in Fig. 1, and then the gases or smoke are de- 30 ected to the right before they can pass out through the opening 'I. A screen consisting of wire mesh I'l is arranged near and slightly above the point of second change of direction of the smoke. It will be noted that the smoke changes 35 direction Ytwice and is thereby retarded somewhat at point I8, whereby any dust, dirt or foreign matter may drop by gravity in the hopper I4 and pass through the bottom of the hopper into the chute I8. The lower end of the chute I8 40 discharges into the casing I9 which contains a removable container 20 arranged normally beneath the discharge end of the chute I 8. The casing I9 has a removable door 2I whereby the receptacle 2D may be inserted and removed when- 45 ever desired. A wire mesh covered vent opening 22 is also provided in casing I9.

As the chimney I functions to emit smoke and other foreign matter from a fire, the smoke and foreign matter will pass upwardly in a substan- 50 tially vertical direction and strike the upper part of the deflector IG. This will change the direction of the smoke, dust, and the like, and to a limited extent deflect the same downwardly as Well as to the left as shown in Fig. 1. Also the 55.

space at point E8 is greater than the passageway Z3. This reduces the pressure and speed of the parts so that the dust and the like may readily drop down into the hopper M while the gaseous mattei' will continue to rise and pass through the screen Il. Screen H is preferably rather fine wire mesh and consequently acts to stop a certain amount of dust and the like passing out through the opening 1.

As the smoke, dust, and the like moves upwardly into the hood 3, it will strike one of the blades 9 and rotate the propeller I0, which in turn will rotate the stirrer I3. As the smoke, dust, and the like continues to move upwardly through the chimney, it will continually cause the propeller I and associated parts to move upwardly so that there will always be a full passage in the hopper I4 for any collected dust, dirt, or the like.

I claim:

l. A dust collector comprising a hood having i a casing formed with a top having an outlet, a bottom having an inlet, outer depending flanges carried by said bottom and adapted to fit over the top of a chimney and inner depending flanges adapted to t into the flue of said chimney, said inner depending anges extending from said bottom around said inlet, a plurality of walls in said casing extending from said inlet and forming a passageway for defiecting the incoming smoke at right angles to the axis of said inlet, a screen between the outlet of said passageway and the outlet in the top of the casing, and means including part of said casing forming a dust collecting hopper below the discharge end of said passageway.

2. A dust collector comprising a hood having a casing formed with an apertured top and an apertured bottom and with outer depending ilanges adapted to t over the top of a chimney and inner depending flanges adapted to t into the iiue of said chimney, said inner depending ilanges extending from said bottom around the perimeter of said aperture in the bottom and forming an inlet from said chimney, a plurality of wall members extending generally upwardly from said inlet for presenting an arc-shaped generally ilaring passageway with the opening positioned to discharge smoke horizontally against one wall of said casing when the casing is positioned with the inlet extending vertically, a dust collecting hopper positioned substantially below that part of the wall of said casing struck by the smoke discharged from said passageway, and a screen above said hopper extending from the top of the discharge opening of said passageway to the casing, said casing having a top wall above said screen for deflecting gases passing through said screen to the aperture in the top of the casing which acts as an outlet. Y

3. A dust collector including a hood having an outer casing formed with an outlet in the top and an inlet in the bottom, means in said hood for forming a tortuous passageway for smoke passing from said inlet to said outlet, a screen extending across said passageway at one point, a dust co1- lecting hopper positioned below said screen, a stirring member arranged substantially centrally of said hopper, a shaft secured to said stirring member and extending into said passageway immediately above said inlet, and a bladed member actuated by smoke moving into said passageway, said bladed member being rigidly secured to said shaft whereby when said shaft is rotated said stirring member will be caused to function.

' GEORGE E. TEASDALE. 

